System of cleaning filters.



PATENTED AUG. 4, 1905 I H. W. BLAISDELL. SYSTEM OF CLEANING FILTERS.

APPLICATION FILED NOV. 16, 1904.

' INVE/VTUR ATTOR EV b'Z/ITIVESSES:

ejector through the flexible ou'tlet connecfinally discharged from the last element 16 ,thereof,'and conveyed therefrom, by means similar pipe or conduit 10 in the adjacent bay or ga lery of the filter, and the outlet ipes 10 preferably deliver the material to a ateral pipe '12, having .a connection with the first member 13 of a sand washer 14, the members or portions whereof are provided with connections 15, to the main supply pipe or conduit 9, substantially as shown; and the last member 16 of the washer is prefer ably provided with a connection 17 communicatlng with a cross pipe 18, attached to material supply pipe 19, one whereof is connected, preferably by means of a flexible pipe or hose 20, with a suitable portable distributing machine 21, desirab y provided with an endless conveyer 22, to effect the distribution of the material delivered thereto through the flexible connection 2-0.

The parts, or elements or machines herein shown and described are not claimed herein per 88, that is the same are not described and shown specifically and in detail because the s3ccific constructionand operation thereof oes not constitute the subject matter of this application; but the combination, arrangement and operation and result attained by the instrumentalities herein shown and described is desired to be covered hereby.

The operation of'the invention will be readily understoodfrom the foregoing description'when taken in connection with the accompanying drawing, and the following ex lanation thereof.

lhe conveying fluid or water is conveyed from the source of supply, preferably under pressure, through the main supply pipe 9 in the direction indicated by arrow on said pipe, from thence a ortion of the water flows laterally into the p1pe'8 and thence into the llexible connection 6 to the machine 2, where it passes through and out of the ejector 5, carrying with it the fouled filtering material which has been collected by the scraper 3 and raised and discharged into the ejector 5 by the elevator 4, the conveyed fluid and fouled filtering material passing from the tion 7, outlet pipe or conduit 10, as indidated by arrows, and thence again laterally through the connecting pipe 11, and the lateral pipe 12, into the first element 13, of the washing machine 14, where the conveying fluid and. fouled filtering material is washed, and conveyed from the 'ashing machine, by a portion of the water entering the main supply pipe 9 and passing beyond the first pipe 8, to the washing machine, as shown by arrows on the drawing;-

After the material shall have been washed or cleansed in the washing machine 14, it is of a portion of the water passing from th pipe 9, through the connection 17 to the l cross pipe 18, communicating with an inlet pipe 19 m the adjacent bay or gallery of the ter, which pipe 19 in the second gallery is connected with a distributor 21, preferably by means of a flexible supply hose or tubing 20, and the cleansed material is again re served to make all such changes in, and

modifications of, the same, as come within the spirit and scope of the invention.

1. A system for mechanically rcmovin cleaning and returning the sand of filter he} 5 including means for gathering the sand in a heap on the surface of the filter bed, means for removing the sand therefrom, means for cleaning said sand, means for delivering the cleansed sand to and 5 reading the same over the surface of the filter bed and means for conveying said sand from the removing means to the spreading means through said cleaning means, each of said means being self-acting.

2. A system for mechanically removin cleaning and returning the sand of filter beds including a machine adapted to travel u on the surface of a filter bed and to accumu ate the sand in heaps thereon and remove the sand therefrom, means for cleaning said sand, a machine for mechanically delivering the cleansed sand to and spreading the same over the surface of the filter bed, and means for conveying said sand through said cleaning means from one to the other of said machines.

3. A system for mechanically cleaning filter beds including a scraping machine for scraping the sand from the surface of the filter bed, heaping" the same thereon and removing the same therefrom, main inlet and outlet fluid pipes, connections between said pipes respectively and said machine, cleansmg apparatus having C()I1I16Ct1011 with said main inlet and outlet pipes, a machine for dolivering and spreading the cleansed sand over the surface of the filter bed and a connection between the latter machine and. said cleansing apparatus, said machines and apparatus being self-acting.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses at Los Angelcs, county of Los Angeles, State of California this second day of November 1904.

HIRAM W. BLAISDELL.

Witnesses:

T. Moscow, 1 IGNON F0111). 

